Fangrui Product Details [widely Used]: 15 Most Commonly Used Sizes, Suitable For All General-purpose Notebook Computers. Such As B. Ibm Hp Mac Mac Dell Lenovo Samsung Sony Toshiba Lg Gateway And So On. [box Size]: About 178 X 105 X 23 Mm, It Is Very Convenient For You To Arrange The Screws, It Looks Neat And Orderly. [screw Material]: Alloy Steel, Laptop Screw Set Has Excellent Anti-rust Performance, Can Ensure Long-term Use. [computer Repair]: A Set Of Different Screws Used For Laptop Repair, It Is Very Convenient For You To Repair The Laptop. Category: Combination Screws Head Type: Round Head Groove Type: Cross Function Mode: Hand Screw/screwdriver Thread Specifications: M2 X 3 (small), M2 X 3 (large), M2 X 4, M2 X 6, M2 X 8, M2 X 10, M2.5 X 3, M2.5 X 4, M2, 5 X 5 , M2.5 X 6, M2.5 X 8, M2.5 X 10, M2.5 X 12, M3 X 3, M3 X 4 (30 Pieces Of Each Size) Thread Tolerance: Standard Surface Treatment: Black Oxide Material:alloy Steel Colour:black Package Contents: 30 X M2x3 Screws(small) 30 X M2x3 Screws(large) 30 X M2x4 Screws 30 X M2